Note 4 - Net Earnings Per Share - Earnings Per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Net income (loss) attributable to Air T, Inc. Stockholders	$ (671,939)	$ 1,220,037	$ 718,151	$ (3,447,332)
Earnings (Loss) Per Share:
Basic (in dollars per share)	$ (0.33)	$ 0.60	$ 0.35	$ (1.60)
Diluted (in dollars per share)	$ (0.33)	$ 0.60	$ 0.35	$ (1.60)
Weighted Average Shares Outstanding:
Basic (in shares)	2,042,789	2,042,789	2,042,789	2,152,301
Diluted (in shares)	2,042,789	2,047,637	2,047,547	2,152,301